Portrait of John Markus

John Markus

Born: Unknown birthdate.
John Markus is ?
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Ages in TV shows are based off the first air date and may not be accurate. View individual episode details for accurate ages
Poster of The Zen Diaries of Garry Shandling
The Zen Diaries of Garry Shandling
John Markus was
? in The Zen Diaries of Garry Shandling
as 'Self'.
First Air Date
Mon, Mar 26 2018
Poster of The Cosby Show
The Cosby Show
John Markus was
? in The Cosby Show
First Air Date
Thu, Sep 20 1984